15 CFR §2014.3

1. (a)In-quota lamb meat may only be entered as a product of a participating country if the United States importer makes a declaration to the United States Customs Service, in the form and manner determined by the United States Customs Service, that a valid export certificate is in effect with respect to that lamb meat product.
2. (b)To be valid, an export certificate shall:
   1. (1)Be issued by or under the supervision of the government of the participating country;
   2. (2)Specify the name of the exporter, the product description and quantity, and the quota year for which the export certificate is in effect;
   3. (3)Be distinct and uniquely identifiable; and
   4. (4)Be used for the quota year for which it is in effect.